📅  最后修改于: 2023-12-03 15:39:46.969000             🧑  作者: Mango
拦截过滤器模式(Intercepting Filter Pattern)是一种用于过滤处理请求和响应的设计模式。该模式由多个组件构成,每个组件都是一个拦截器,可以在处理请求和响应时拦截并提供自定义处理。
拦截过滤器模式由以下组件组成:
下面是一个使用拦截过滤器模式的简单示例。
public interface Filter {
void execute(String request);
}
public class AuthenticationFilter implements Filter {
@Override
public void execute(String request) {
System.out.println("Authenticating request: " + request);
}
}
public class DebugFilter implements Filter {
@Override
public void execute(String request) {
System.out.println("Debugging request: " + request);
}
}
public class Target {
public void execute(String request) {
System.out.println("Executing request: " + request);
}
}
import java.util.ArrayList;
import java.util.List;
public class FilterChain {
private List<Filter> filters = new ArrayList<>();
private Target target;
public void addFilter(Filter filter) {
filters.add(filter);
}
public void setTarget(Target target) {
this.target = target;
}
public void execute(String request) {
for (Filter filter : filters) {
filter.execute(request);
}
target.execute(request);
}
}
public class Main {
public static void main(String[] args) {
FilterChain filterChain = new FilterChain();
filterChain.addFilter(new AuthenticationFilter());
filterChain.addFilter(new DebugFilter());
Target target = new Target();
filterChain.setTarget(target);
filterChain.execute("hello world");
}
}
Output:
Authenticating request: hello world
Debugging request: hello world
Executing request: hello world
拦截过滤器模式可以在请求和响应的处理过程中进行拦截和处理,可以实现诸如身份验证、请求日志记录、性能监控等功能。该模式具有高度的可扩展性和可维护性,在实现复杂的 Web 应用程序时非常有用。